Fatigue is commonly experienced in numerous pathologies, including schizophrenia. Research has shown that chronic fatigue can exacerbate clinical symptoms. Several evidence-based interventions for fatigue syndrome have been shown to be effective in other medical conditions, but up to this date no research has assessed interventions in fatigue management within psychotic populations. The aim of this study is to evaluate (in a multisite single blind randomized clinical trial) the efficacy of a cognitive-behavioral therapy (CBT) intervention of fatigue management in people diagnosed with schizophrenia. Secondary objectives include the examination of changes in fatigue scores as well as clinical symptoms, physical \& cognitive functioning, quality of life at 9-month post CBT intervention. Another aim in this study is to assess - MICROBIATE The investigators hypothesize that following the CBT treatment intervention, patients will demonstrate reduced level of fatigue. No change in the severity of fatigue is expected in the group receiving treatment as usual.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
200
14 sessions of 1h CBT intervention
No CBT intervention
Multidimensional Fatigue Inventory (MFI)
MFI - self-assessment instrument with 20 items including 5 dimensions: General, Physical, and Mental Fatigue, Reduced Motivation and Reduced Activity
Time frame: Change between baseline and 3 months later (corresponding to the end of the treatment intervention)
Positive and Negative Syndrome Scale (PANSS)
PANSS - 30 item scale assessing level of symptomatology (positive, negative, general psychopathology) in psychotic disorders
Time frame: baseline - 3 months - 9 months
Clinical Assessment Interview for Negative Symptoms (CAINS)
CAINS - semi-structured interview measuring level of severity of negative symptoms
Time frame: baseline - 3 months - 9 months
Calgary Depression Scale for Schizophrenia (CDSS)
CDSS - 9 item scale assessing level of depressive symptomatology in schizophrenic populations
Time frame: baseline - 3 months - 9 months
Berlin Questionnaire (BQ)
BQ- questionnaire consisting of 3 categories related to the risk of having sleep apnea; snoring (section 1), daytime somnolence (section 2), and hypertension and BMI (section 3
Time frame: baseline - 3 months - 9 months
Idiopathic Hypersomnia Severity Scale (IHSS)
IHSS - self-report measure of 14 items assessing - hypersomnolence symptoms, consequences, and responsiveness to treatment
Time frame: baseline - 3 months - 9 months
Sleep Condition Indicator (SCI)
SCI - 8 item scale evaluating symptoms of insomnia based on DSM 5 criteria
Time frame: baseline - 3 months - 9 months
International Physical Activity Questionnaire short form (IPAQ)
IPAQ - surveillance tool assessing levels of physical activity in patients with schizophrenia
Time frame: baseline - 3 months - 9 months
Quality of life (S-QoL)
(S-QoL) - self-assessment questionnaire assessing health related quality of life in schizophrenic populations
Time frame: baseline - 3 months - 9 months
Functional Remission of General Schizophrenia (FROGS)
FROGS - 19 item questionnaire assessing level of functional remission in schizophrenic populations
Time frame: baseline - 3 months - 9 months
Intrinsic Motivation Inventory for Schizophrenia Research (IMI-SR)
IMI-SR - self-report scale with 21 items evaluating intrinsic motivation in schizophrenic populations
Time frame: baseline - 3 months - 9 months
French National Adult Reading Test (fNART)
fNART - test used in assessing intellectual levels within French speaking populations
Time frame: baseline - 9 months
California Verbal Learning Test (CVLT)
CVLT - neuropsychological assessment evaluating episodic verbal learning and memory
Time frame: baseline - 9 months
Trail Making Test (TMT)
TMT - neuropsychological assessment evaluating executive functioning (attention, visual exploration, speed, mental flexibility)
Time frame: baseline - 9 months
Pedometer
Pedometer - electronic portable device - assessment of distance travelled -
Time frame: baseline - 3 months - 9 months (each time pedometer will be worn during one week)
Physical examinations (PE) and vital signs (VS)
PE includes - weight, BMI, abdominal perimeter VS includes: heart rate, and arterial blood pressure
Time frame: baseline - 3 months - 9 months
Blood samples
lipids, glycaemia, CRP (C-reactive protein)
Time frame: baseline - 3 months - 9 months
Microbial translocation
DNA extraction and analyze of LBP (Lipopolysaccharide Binding Protein), CD14s, l'I-FABP (fatty acid-binding proteins), zonulin, real-time PCR (polymerase chain reaction) analysis (DNA16s)
Time frame: baseline - 3 months - 9 months
Inflammatory status
GM-CSF (granulocyte-macrophage colony-stimulating factor), IFN-γ, IL-1β, IL-2, IL-4, IL-5, IL-6, IL-8, IL-10, TNF-α
Time frame: baseline - 3 months - 9 months
Letter-Number Sequencing subtest (LNS)
good predictor of fluid intelligence and strongly correlates with laboratory working memory measures.
Time frame: baseline - 9 months
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